TT Quattro Coupe L4-1.8L Turbo (AWP) (2001)
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Place the injector which is to be tested into a measuring glass from injection quantity tester VAG 1602.
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Connect one of the injector contacts to engine Ground using test lead and crocodile clamp from VAG 1594 A.
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Connect second injector contact to positive using remote control VAG 1348/3 A, adapter cable VAG 1348/3-2 and auxiliary cable.
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Bridge contacts 1 and 65 on the test box using test leads from adapter set VAG 1594 A.
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Switch on ignition.
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The fuel pump should run.
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Activate remote control VAG 1348/3A for 30 seconds.
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Carry out measurement on all injectors.
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Once all four injectors have been actuated, place measuring glasses on a level surface.
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Specification for each injector: 145 ±12 ml
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If the measured value for one or more of the injectors is outside the tolerance range, switch off the fuel pump (by switching off ignition) and
replace the defective injector.
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If the measured values for all the injectors are outside the tolerance range, check the fuel pressure. See: Computers and Control Systems/Testing
and Inspection/Component Tests and General Diagnostics/Fuel Pressure, Pressure Regulator and Holding Pressure, Checking
NOTE: When checking the injection quantity, also check the spray pattern. The spray pattern should be the same for all the injectors.
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Install injectors together with fuel rail.